Definition of ink

• n. - The step, or socket, in which the lower end of a millstone spindle runs.
• n. - A fluid, or a viscous material or preparation of various kinds (commonly black or colored), used in writing or printing.
• n. - A pigment. See India ink, under India.
• v. t. - To put ink upon; to supply with ink; to blacken, color, or daub with ink.